/* Responsive Styles - Mobile First */

/* Tablet and below (768px) */
@media (max-width: 768px) {
    :root {
        --h1: 2.5rem;
        --h2: 2rem;
        --h3: 1.5rem;
        --body: 1rem;
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }

    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: var(--header-height);
        flex-direction: column;
        background: rgba(10, 14, 39, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.5);
        padding: var(--spacing-md) 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        padding: var(--spacing-sm) 0;
        font-size: 1.2rem;
    }

    .hamburger {
        display: flex;
    }

    /* Hero */
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-cta .btn {
        width: 100%;
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: 1fr;
    }

    .methodology-steps {
        grid-template-columns: 1fr;
    }

    .deliverables-list {
        grid-template-columns: 1fr;
    }

    /* About */
    .expertise-grid {
        grid-template-columns: 1fr;
    }

    .benefits-list {
        grid-template-columns: 1fr;
    }

    /* Portfolio */
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    /* Contact */
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        align-items: center;
    }

    .social-links {
        justify-content: center;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --h1: 2rem;
        --h2: 1.75rem;
        --h3: 1.25rem;
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    section {
        padding: var(--spacing-lg) 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }

    .card {
        padding: var(--spacing-md);
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stats-bar {
        grid-template-columns: 1fr;
    }
}

/* Large screens (1400px and above) */
@media (min-width: 1400px) {
    :root {
        --max-width: 1400px;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .nav-link,
    .social-link,
    .footer-link {
        min-height: 44px;
        min-width: 44px;
    }

    .card:hover {
        transform: none;
    }

    .btn-primary:hover {
        transform: none;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}